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      Question

      Rise of oil a wick is due to –

      A density of the oil Correct Answer Incorrect Answer
      B viscosity of the oil Correct Answer Incorrect Answer
      C surface tension of the oil Correct Answer Incorrect Answer
      D pressure of the oil Correct Answer Incorrect Answer

      Solution

      Thephenomenonofriseorfallof liquidinacapillarytubeiscalledcapillarity.Oil rises through a wick due to capillarity. The narrowporesinthethreadsofawickactliketiny capillaries, through which oil rises. Capillary action is the result of adhesion and surface tension.

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